إِذِ الْإِعْرَاضُ عَنِ الْقَوْلِ الْمُطَّرَحِ أَحْرَى لِإِمَاتَتِهِ وَإِخْمَالِ ذِكْرِ قَائِلِهِ، وَأَجْدَرُ أَنْ لَا يَكُونَ ذَلِكَ تَنْبِيهًا لِلْجُهَّالِ عَلَيْهِ، غَيْرَ أَنَّا لَمَّا تَخَوَّفْنَا مِنْ شُرُورِ الْعَوَاقِبِ وَاغْتِرَارِ الْجَهَلَةِ بِمُحْدَثَاتِ الْأُمُورِ، وَإِسْرَاعِهِمْ إِلَى اعْتِقَادِ خَطَإِ الْمُخْطِئِينَ وَالْأَقْوَالِ السَّاقِطَةِ عِنْدَ الْعُلَمَاءِ، رَأَيْنَا الْكَشْفَ عَنْ فَسَادِ قَوْلِهِ وَرَدَّ مَقَالَتِهِ بِقَدْرِ مَا يَلِيقُ بِهَا مِنَ الرَّدِّ، أَجْدَى عَلَى الْأَنَامِ وَأَحْمَدَ لِلْعَاقِبَةِ إِنْ شَاءَ اللَّهُ.
Translation: For turning away from a discarded opinion is more likely to extinguish it and leave the name of its proponent forgotten, and is more fitting so that ignorant people are not thereby alerted to it. But when we feared harmful consequences—the uninformed being deceived by newly introduced matters and rushing to believe the errors of those who err and opinions rejected by scholars—we considered exposing the invalidity of his position and rebutting it to the extent appropriate to it more beneficial to people and more commendable in its outcome, God willing.
The practical stakes concern how one classifies an otherwise usable isnād. Muslim presents refutation as proportionate to its evidentiary consequence, rather than as a license for generalized polemic.